Duplicate 9i database to 11g

Hi,Apologies for my ignorance.  I need to get a production 9.2.0.8 database on 64-bit AIX migrated to a new server (also AIX 64bit) and upgraded to 11.2.0.3.  I have installed and patched 11.2.0.3 on the new server, and now I am trying to use rman "duplicate" to get the database over to the new server.  My duplicate command seems to go well, but fails on the "alter clone database open resetlogs" step (apparently near the end):

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00601: fatal error in recovery manager
RMAN-03004: fatal error during execution of command
RMAN-10041: Could not re-create polling channel context following failure.